After seen some crap Billy Mays puts out for fixing scratches, i doubt anything from wal-mart or Walgreens. best way would be to re clear(must use plastic adhesion promoter) them or have them thermo-set to the plastic's temp to basically seal the scratches and pores. If not they remain open. I had a Paintless dent repair guy come to my shop and swear up and down ond his system, within 4 days they hazed up in the rain and sun we been having.